Method of and apparatus for marking objects



March 8, 1927.

H. w. HACKER METHOD OF AND APPARATUS FOR MARKING OBJECTS Filed. May 9;1925 2 Shets-Sheet 1 March 8, 19 27; 1,620,343

H. w. HACKER.

METHOD OF AND APPARATUS FOR MARKING OBJECTS Filed may-9, 192s 2Sheets-Sheet 2 @IVI .I I ii 12 w a iL will, I

,2 Gig/z fig Gig/2 @g/fl r/ /.9 6 w Hsva F Y A W22 I g 4 I 0 We?Patented Mar. 8, 1927.

UNITED STATES PATENT OFFICE.

HORACE W. HACKER, OF CHICAGO, ILLINOIS.

METHOD OF AND APPARATUS FOR MARKING OBJECTS.

Application filed ma a,

in different colors, eifected from said plates upon the same print willbe in exact register.

In carrying out the process of my invention in the preferred way,equally spaced indices or marks are provided upon all the plates of aset. These indices may be half toned upon the plates from marks provided15 upon the original drawing or other copy.

I then place the indices upon each plate that is to be marked in visibleregistr with indices upon a gauge. A marking e ement is employed that ismaintained in fixed relation with the gauge whereby marks may besuccessively placed upon the plates in exactly the same location withrespect to the picture or print to be compositely produced from theplates.

In the preferred embodiment of the invention, I employ means whereby themarking element is not only maintained in fixed relation with the gaugebut also a guide for the marking element, also in fixed relation withthe gauge. The marks that are formed upon the plates by means of theapparatus of my invention are desirably holes and the marking element isa drill whose guide is in the form of a sleeve that is fixed in positionwith respect to the gauge. These holes receive positioning pins that areprovided on the printing bed, the holes and pins cooperating to enablethe imposition of the plates in succession in exactly the same placeupon the bed.

- The invention will be more fully explained by reference to theaccompanying drawings in which Fig. 1 is a plan view illustrating of theinvention, this figure also showing one way of using the apparatus; Fig.2 is a sectional view on line 2-2 of Fig. 1; Fig. 3'

illustrates another way of using the appa-- the preferred embodiment ofthe apparatus 1923. Serial No. 637,679.

another way of using the a paratus; Fi 9 illustrates the im osltion of aplate marked as illustrated in ig. 8; Figs. 10, 11, 12, 13 and 14:illustrate plates with diiferently arranged and differently formedindices thereon; and Fig. 15 diagrammatically illustrates a two colorprint which may be printed from two plates similarly marked inaccordance with the invention.

Like parts are indicated by similar characters of reference throughoutthe different figures.

The apparatus illustrated includes a rectangular bed 1 which constitutesboth a support and'a positioner for each of the printing plates, such asthe plate 2, which is to be marked. A gauge is rigidly assembled withthis bed. The-gauge is desirably in the form of a T-square, the head 3-of the T- square bein fixedly assembled with the bed by means screws 4which pass through the ends of the T head into opposite sides of thebed. The stem 5 of the T-square is desirably assembled with the thirdside of the bed by means of screws 6. The head and stem of the T-squareare desirably in the form of frames that respectively carry glass orother transparent panels 7 and 8 that are immovably held in theirframes. A space intervenes between the T- square and the bed into whicheach printing plate, such as a plate 2, is slipped. This plate 2 isillustrated as having complemental indices 9 and 10 and othercomplemental indices 11 and 12.

The glass panels 7 and 8 in the an ularly related branches of the gaugeare 'ormed with straight lines 13 and 14 respectively, these lines beingat right angles to each other and respectively parallel with theportions of the gauge on which they are provided.-

These lines constitute indices upon the gauge, each line being a lociofpoints with which the-indices upon the plate may be.

brought into visible register. When the plate is initially marked asindicated at 9, 10, 11 and 12 in Fig. 1, it is adjusted to bring itsmark 10 in visible registry with the line 14 and its line 9 in visibleregistry with the line 13 upon the gauge. When the plate'is thuspositioned a drill 15, which the preferred form of marking element, is

pa ed h g t e p ate 0 rm a h e 16 therein. After the hole 16 is formedthe plate is reversed to bring the index 12 in visible registry with theline 14 and the index- 11 in visible registry with the line .13whereafter the drill is operated to form the hole 17.

In order that the drill may form the hole in exact relation to theregistering indices upon the gauge and the p'.ate 1 provide the guide 18which is in the form of a sleeve that passes through the bed and istherefore fixedly positioned with respect to the bed and gauge. Theinvention is not to be limited, however. to the employment of the drillguide inasmuch as the mechanism for operating the tool is likewiserigidly positioned with respect to the gauge and bed.

The drill operating mechanism illustrated includes a motor 19 in drivingrelation to the drill and carrying a depending rack 20 in mesh with'apinion 21 that is journalcd upon a bracket 22 carried by the mounting 23which is fixed upon the bed. A lever 24 is in turning relation to thepinion whereby the motor and the drill carried thereby may be elevatedand lowered as desired.

The indices 10 and 12 are shown as being in the nature of crossed lines.The exact intersection of the crossings of these lines are each broughtinto registry with the line 14. If the plate be provided with but twoindices 25 and 26 (Fig. 3), the use illustrated in Fig. 3 may beadopted. The intersection of the crossing lines that makes the index 25is placed in registry with the line 13 upon the gauge and theintersection of the other crossing lines that makes the index 26 isplaced in registry with the line 14' of the gauge whereafter the hole 27is drilled.

The plate is then reversed in position to bring the index 26 in registrywith the line 13 and the index 25 in registry with the line 14,whereafter the hole 28 is drilled. If the plate be provided with indicesin the form of long lines 29 and 30 crossed by dotted lines 31, 32, themethod of forming the holes 33. 34 illustrated in Fig. 8 may beemployed. The stem of the gauge in this figure has two parallel lines14, 14 in the plass panel thereof that are upon opposite sides of theaxis ofthe drill and sufliciently removed therefrom so that theintersect-ion of the lines 29 and 31 may be brought into registry withthe line 13 when the intersection of the lines 30 and 32 is in registrywith the line 14 to permit the drill to form the hole. 33 in exactly theright place. When the plate is reversed to form the hole '34 theintersection of the lines 30, 32 may be brought into registry with theline 13 when the intersection of the lines 29'and 31 is in registry withthe line 14' .to enable the formation of the hole 34 in exactly theright place.

Figs. 10 to 14, inclusive, illustrate various indices, some of whichhave already been mentioned, upon printing plates, these figures showingthe plates before the holes are produced therein. Figs. 10 and 14illustrate two complemental plates with similar indices and Fig. 15illustrates the print that may result from these plates after they havebeen properly drilled or otherwise marked and suitably imposed. Theplates shown in Figs. 10 and 14 hear such indices as are illustrated inFig. 1 on the plate 2. Fig. 11 illustrates the indices upon the plate ofFig. 3. Fig. 12 illustrates the plate shown in Fig. 5. Fig. 13 shows aplate with indices that are in the form of dots. In order to form one ofthe holes in this plate the dots 35 and 36 are placed in registry withtheiliue 13 when the dot. 37 is placed in registry with the line 14.'hen the other hole is to be formed the plate of Fig. 13 is reversed tobring the (lots 33 and 39 in registry with the line 13 and the dot 40 inregistry with the line 14.

Any suitable means may be employed for imposing the plates upon theprinting beds. I have illustrated a pin 41 in fixed relation to the beda and a pin 42 upon a carrier 43 that is slidable in a slot 44 formed inthe bed. The plate that is being imposed is positioned to enable one ofits holes to receive the pin 41 whereafter the pin 42 is adjusted toenter the other hole.

The apparatus of my invention is an instrument of precision in thehighly developed art of printing. By the use of this apparatus much timeis saved in the imposition of color plates upon printing beds, as willbe at once apparent to those skilled in the art.

\Vhen it is stated in the claims that a fixed relation exists betweencertain elements of the implement it is intended to mean that such fixedrelation is only necessarily constant during the marking of one set ofplates essential to the production of a 1 single design; and suchdefinition of structure is intended to include within its scopeimplements of this character wherein elements are relatively adjustableso that one fixed relation may be provided therebetween l to mark oneset of plates and another fixed relation provided. if 'necessary, tomark another set of plates.

lVhile l have herein shown and particularly described the preferredstructure of my invention I do not, wish to be limited to the precisedetails of construction shown as changes may readily be made withoutdcparting from the spirit of my invention. but having thus described myinvention 1 claim as new and desire to secure by Letters Patent thefollowing 1. An implement for marking objects including a bed forsupporting an object to be marked. a marking element in fixed rela- 11tion to the bed, a pair of sighting indices at a distance from eachother located over and spaced from the upper face of the bed, said upperface having an unobstructed portion permitting an object to be shiftedsuperficially thereon while disposed beneath both of said indices,whereby said object may be positioned with the sighting indices invisible register respectively and simultaneously with correspondinglyspaced apart indices on the object, thereby to .position said object inpredetermined relation to the marking element.

2. An implement for positioning objects to be marked including a bed forsupporting an object, a guide for a marking element in fixed relation tothe bed, a pair of sighting indices at a distance from each otherlocated over and spaced from the up per face of the bed, said upper facehaving an unobstructed portion permitting an object to be shiftedsuperficially thereon While disposed beneath both of said indices,whereby said ob'ect may be positioned with the sighting in ices in.visible register respectively and simultaneously with correspondinglyspaced apart indices on the object, thereby to position said object inpredetermined relation to the guide for a marking element.

3. An implement for marking objects including a bed for supporting anobject-to be marked, a pair of sighting indices at'a distance from eachother located over and spaced from the upper face of the bed, said upperface having an unobstructed portion permitting an object to be shiftedsuperficially thereon while disposed beneath both of said indices,whereby said object may be positioned with the sighting indices invisible register respectively and simultaneously with correspondin lyspaced apart indices on the object, an a marking element in fixedrelation to the sighting indices.

4. An implement for positioning objects to be marked including a bed forsupporting an object, a pair of sighting indices at a distance from eachother located over and spaced from the upper face of the bed, said upperface havin an unobstructed portion permitting an object to beshiftedsuperficially thereon while disposed beneath both of saidindices, whereby said object may be positioned with the sightin indices.in visible register respectively an simultaneously with correspondinglyspaced apart indices on the object and a guide for a marking element infixed relation to the sighting indices.

5. A marking implement including a boil for supporting the objects to bemarked, a gauge spaced above the bed to permit the positioning ofobjects to be marked beneath the gauge and over the bed and havingindices located at a distance from each other for registry withcorrespondingly spaced apart indices upon the object to be marked, and amarking element in fixed relation to both the bed and gauge.

6. An implement for, positioning objects to be markedincluding a bed forsupporting the objects, a gauge spaced above the bed to permitpositioning of the objects to be marked beneath the gauge and over thebed and having indices located at a distance from each other forregistry with correspondingly spaced apart indices upon the object to bemarked, and a guide for marking element in fixed relation to both thebed and gauge.

7. A marking implement including a bed for supporting objects to bemarked, a gauge spaced above the bed to permit positioning of objects tobe marked beneath the gauge and above the bed and having transparentportions bearing indices located at a distance from each other forregistry with correspondingly spaced apart indices upon the object to bemarked, and a marking element in fixed relation to both the bed andgauge.

8. An implement for positioning objects to be marked including a bed forsupporting the objects, a gauge spaced above the bed to permitpositioning of objects to be marked beneath the gauge and over the bedand having transparent portions bearing indices located at a distancefrom each other for registry with correspondingly spaced apart indicesupon the object to be marked, and a guide for a marking element in fixedrelation to the bed and gauge.

9. A marking implement including a bed for supporting objects to bemarked, a gauge spaced above the bed to permit positioning of objects tobe marked beneath the gauge and above the bed and having transparentportions bearing indices located at a distance from each other forregistry with correspondingly spaced apart indices upon the object to bemarked. and a marking element in fixed relation to the gauge.

10. An implement for positioning objects to be marked including a bedfor supporting the objects, a gauge spaced above the bed to permitpositioning of objects to be marked beneath the gauge and over'the bedand having transparent portions bearing indices lo cated at a distancefrom each other for registry with correspondingly spaced apart indicesupon the object to be marked, and a guide for a marking elementin fixedrelation to the auge.

11. X marking implement including a bed for supporting objects to bemarked, a gauge spaced above the bed to permit positioning of objects tobe marked beneath the gauge and above the bed and having indices locatedat a distance from each other for registry with correspondingly spacedapart indices upon the object to be marked, and a marking element infixed rela ion to the gauge.

12. An implement for positioning objects to be marked including a bedfor supporting spaced apart indices upon the object to be marked, and aguide fora marking element in fixed relation to the gauge. 10

In Witness whereof, I hereunto subscribe myname this 2nd day of May, A.D. 1923.

HORACE W. HACKER.

